Question

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(04.01)

If y = 5x − 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? (4 points)

Group of answer choices

{(0, −4), (2, 6), (4, 20)}

{(0, −4), (2, 6), (4, 16)}

{(0, 4), (2, 6), (4, 16)}

{(0, 4), (2, −6), (4, 20)}

Answer 1

B

Explanation:

use the rule to figure it out.

y=5x-4

plug it in, starting with the first x input

5x turns into 5*0

5*0=0

0-4=-4

that narrows it down to 2 choices (A and B) with the first x input as -4

then continue

5x turns into 5*2

5*2=10

10-4=6

still working

last, 5x turns into 5*4

5*4=20

20-4=16

there is only one choice left that has the x values, -4 and 16

the answer is B. it's really not hard at all, you just plug it in. easy stuff. you got this!